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都市経済学研究会

場所:京都大学経済研究所 本館1階 第二共同研究室 【アクセス】
(変更のある場合は別に記載いたします。)

 

時間:3時~6時(時間変更のある場合は別に記載いたします。)

 

世話人

文世一 (京都大学大学院経済学研究科) [HP]
森知也 (京都大学経済研究所) [HP]
大澤実 (京都大学経済研究所)
[HP]
町北朋洋 (京都大学東南アジア地域研究研究所)
[HP]
松島格也 (京都大学大学院工学研究科)
[HP]
山本和博 (大阪大学大学院経済学研究科)
松尾美和 (神戸大学経済経営研究所)
[HP]

 

連絡先

TEL:075-753-7120(秘書・中村) FAX:075-753-7198

Email: 

 

カテゴリ
日時
タイトル
報告者/場所
詳細
2020/07/31 (金)
16:30〜18:00
Effects of non-pharmaceutical interventions on the mitigation of the spread of infectious diseases
藤原直哉(東北大学)
オンライン開催

要旨:Pandemic of COVID-19 required to change our lifestyles to contain or mitigate the spread of infectious diseases. Various Non-pharmaceutical intervention (NPI) measures have been implemented in the situation that no effective treatment or vaccine has been established. New methods for monitoring the spread of infection have been proposed based on the recent technological and theoretical developments. In this talk, I review basics of mathematical models of infectious diseases and recent topics related with NPIs, and report and discuss some results on the effects of NPIs and the future perspective.

2020/07/31 (金)
15:00〜16:30
Full information maximum likelihood estimation of quantitative spatial economics model
瀬木俊輔(京都大学)
オンライン開催

要旨:本研究は定量的空間経済モデル(quantitative spatial economics models)のパラメータを完全情報最尤推定(full information maximum likelihood, FIML)によって推定する新しい手法を提案する。内生変数の観測値から外生的な構造的残差(structural residuals)を一意に求められるモデルに対して、提案手法は適用可能である。構造的残差が確率分布に従うという仮定の下で、対数尤度関数を構築できる。提案手法は操作変数を必要としない。提案手法は、クロスセクションデータとパネルデータの双方に適用可能である。提案手法は、多くの場合において、パラメータの推定値を空間均衡が安定になる範囲に制約すると考えられる。本研究は、提案手法を二種類のデータに対して適用することにより、その有効性を確認する。一つ目は、既知のパラメータを有するモデルから発生させた実験データであり、二つ目は、1975年から2015年にかけての日本国内の観測データである。

2020/02/14 (金)
16:30〜18:00
General equilibrium theory of land
藤田昌久(京都大学)
京都大学経済研究所本館1階 第二共同研究室

要旨:Land is everywhere, being the substratum of our existence. In addition, land is intimately linked to the dual concept of location in human activity. Together, land and location are essential ingredients for the lives of individuals as well as for national economies. Today, there exist two different approaches to incorporating land and location into a general equilibrium theory. Dating from the classic work of von Thünen (1826), a rich variety of land-location density models have been developed. In a density model, a continuum of agents is distributed over a continuous location space. Given that simple calculus can be used in the analysis, these density models continue even today to be the “workhorse” of urban economics and location theory. However, the behavioral meaning of each agent occupying an infinitesimal “density of land” has long been in question. Given this situation, a radically new approach, called the σ-field approach, was developed in the mid 1980s for modeling land in a general equilibrium framework. In this approach: (i) the totality of land, L, is specified as a subset of R^2, (ii) all possible land parcels in L are given by the σ-field of Lebesgue measurable subsets of L, and (iii) each of a finite number of agents is postulated to choose one such parcel . Starting with Berliant (1985), increasingly more sophisticated σ-field models of land have been developed. Given these two different approaches to modeling land within general equilibrium framework, several attempts have thus far been proposed for bridging the gap between them. But while a systematic study of the relationship between density models and σ-field models remains to be completed, the clarification of this relationship could open a new horizon toward a general equilibrium theory of land.

2020/02/14 (金)
15:00〜16:30
The values of environmental health risks improvement: Evidence from the largest low emissions zone(姜哲敏氏・太田充氏との共著)
牛島光一(筑波大学)
京都大学経済研究所本館1階 第二共同研究室
2019/12/13 (金)
16:30〜18:00
How much does policy uncertainty affect foreign direct investment?: Micro-evidence from Japan's international investment agreements
神事直人(京都大学)
京都大学経済研究所本館1階 第二共同研究室
【国際経済学セミナーと共催と共催】
2019/12/13 (金)
15:00〜16:30
Giving up job search because I don't have a car: Labor market participation and employment status among single mothers with and without cars (with Hiroyuki Iseki)
松尾美和(神戸大学)
京都大学経済研究所本館1階 第二共同研究室
【国際経済学セミナーと共催と共催】
2019/10/25 (金)
16:30〜18:00
The impact of local agglomeration on firm entry and exit (with Keisuke Kondo)
大久保敏弘(慶應義塾大学)
京都大学経済研究所本館1階 第二共同研究室

要旨:This study analyzes how local agglomeration affects the probabilities of firm entry and exit by focusing on single-establishment firms in the service sector. Firms in the service sector face geographically localized markets since service is generally non-tradable. A theoretical prediction in the literature is that firm turnover is increasing in market size, which is empirically tested in this paper. A novelty of this study is to identify geographic ranges of local agglomeration with geocoding of firm location and micro-geographic data. This study finds that probability of firm entry and exit in the service sector is largely affected by agglomeration factors localized within a 3km radius from their locations.

2019/10/25 (金)
15:00〜16:30
From samurai to skyscrapers: Lot fragmentation and urban development (with Nakajima Kentaro and Teshima Kensuke)
山﨑潤一(神戸大学)
京都大学経済研究所本館1階 第二共同研究室
2019/10/16 (水)
16:30〜18:00
Measuring the benefits of ride-hailing services to urban travelers: The case of the San Francisco bay area (with Hyeonjun Hwang and Jia Yan)
Clifford Winston(Brookings Institution)
京都大学経済研究所本館4階 第一共同研究室
2019/10/04 (金)
16:30〜18:00
What goes around comes around: Export-enhancing effects of import-tariff reductions
石川城太(一橋大学)・早川和伸(JETROアジア経済研究所)
京都大学経済研究所本館1階 第二共同研究室

要旨:In international trade, transportation requires a round trip for which a transport firm has to commit to shipping capacity that is sufficient to meet the maximum shipping volume. This may cause the “backhaul problem.” Trade theory suggests that, facing the problem, transport firms with market power adjust their freight rates strategically when import tariffs change. As a consequence, a country reducing its import tariffs may experience an increase in exports as well as imports. Using worldwide data covering 1995-2007, we find evidence that supports these predictions: a 1% reduction in an importer’s tariffs increases the import freight rates by around 0.8%; reduces the export freight rates by around 1.1%; and increases the export quantity by 0.6% to 1%. These findings indicate a new mechanism through which import-tariff reductions lead to export expansions.

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